/**
 * 点击波纹效果
 *
 * @param  {[event]} e        [description]
 * @param  {[Object]} arg_opts [description]
 * @return {[bollean]}          [description]
 */
export default function(e, arg_opts) {
    var opts = Object.assign(
        {
            ele: e.target, // 波纹作用元素
            type: "hit", // hit点击位置扩散center中心点扩展
            bgc: "rgba(0, 0, 0, 0.15)" // 波纹颜色
        },
        arg_opts
    );
    var target = opts.ele;
    if (target) {
        var rect = target.getBoundingClientRect();
        var ripple = target.querySelector(".e-ripple");
        if (!ripple) {
            ripple = document.createElement("span");
            ripple.className = "e-ripple";
            ripple.style.height = ripple.style.width =
                Math.max(rect.width, rect.height) + "px";
            target.appendChild(ripple);
        } else {
            ripple.className = "e-ripple";
        }
        switch (opts.type) {
        case "center":
            ripple.style.top =
                    rect.height / 2 - ripple.offsetHeight / 2 + "px";
            ripple.style.left =
                    rect.width / 2 - ripple.offsetWidth / 2 + "px";
            break;
        default:
            ripple.style.top =
                    e.pageY -
                    rect.top -
                    ripple.offsetHeight / 2 -
                    document.body.scrollTop +
                    "px";
            ripple.style.left =
                    e.pageX -
                    rect.left -
                    ripple.offsetWidth / 2 -
                    document.body.scrollLeft +
                    "px";
        }
        ripple.style.backgroundColor = opts.bgc;
        ripple.className = "e-ripple z-active";
        return false;
    }
}
